Suspended solids & SVI analysis.Discover S3A

Rhosonics ultrasonic analysers

Inline slurry density and chemical concentration measurement, backed by PMA application expertise and UK support.

A clearer view of your process

A changing slurry density, acid strength or wort extract concentration can affect product quality, recovery and operating efficiency. Continuous measurement helps your team see the change at the point where an operating decision is needed.

PMA supplies Rhosonics ultrasonic instruments for slurry density and liquid concentration analysis. Select the measurement principle around your material: SDM ECO uses acoustic impedance for slurry density, while concentration analysers use ultrasonic velocity with temperature and, where required, a second measurement.

Our role is to connect the instrument with your process conditions, installation point, reference samples and required control-system outputs.

Rhosonics SDM ECO transmitter and ultrasonic slurry density sensor

Five product families. Defined measurement roles.

Find the instrument that matches your process. Each product page explains the principle, applications and information needed for a technical review.

PMA engineer beside a Rhosonics SDM ECO installation

SDM ECO slurry density meter

Continuous non-nuclear slurry density measurement for mineral processing, quarries, dredging and tunnelling.

Explore SDM ECO

PMA application specialist supporting Rhosonics 8500 process measurement

8500 concentration analyser

Inline measurement of one chemical concentration using ultrasonic velocity and temperature.

Explore 8500

PMA application specialist supporting Rhosonics 9100 process measurement

9100 beer and wort analyser

Inline wort extract concentration measurement for the brewing process.

Explore 9100

PMA application specialist supporting Rhosonics 9500 process measurement

9500 ternary liquid analyser

Measure two chemical concentrations in a defined liquid mixture using complementary process measurements.

Explore 9500

PMA application specialist supporting Rhosonics 9600 process measurement

9600 slurry analyser

Hybrid ultrasonic analysis for application-specific density, suspended solids and dissolved solids duties.

Explore 9600

Industries and applications

Start with the operating question, then select the instrument. Our dedicated website provides detailed guidance for each of these application families.

Mining and mineral processing

Review slurry density across grinding, cyclone feed, thickener underflow and tailings transport.

Read mining guidance

Quarries and aggregates

Track changing solids loading in wash plants, sand recovery and slurry transfer circuits.

Explore quarry application

Dredging and tunnelling

Use density with flow and process context for sediment transfer, production monitoring or bentonite recovery.

Read dredging guidance

Chemicals and surface treatment

Measure defined acids, alkalis and electrolyte mixtures with appropriate materials and process calibration.

Read chemical guidance

Brewing, food and beverage

Monitor wort extract. For sugar-based wastewater, discuss the separate CCM COD configuration and its validated correlation.

Read brewing guidance

Pulp, paper and process materials

Review liquor and slurry duties where dissolved composition, solids loading and temperature need to be understood together.

Read pulp and paper guidance

Put the measurement at a useful decision point

Slurry density control

Use a representative density trend to support dilution, pumping and thickener decisions. For mass-flow calculations, align density with a suitable flow measurement.

Chemical concentration control

Review chemical replenishment, blending or bath control using the actual formulation, temperature range and reference method.

Wort extract monitoring

Observe extract concentration during brewing with a calibration that represents the recipe and process conditions.

Rhosonics

From application review to commissioning

Share your material, expected measurement range, temperature, pressure and pipe or tank arrangement. For slurries, include particle characteristics, abrasion and entrained-air behaviour. For chemicals, include the complete formulation and possible contaminants.

1. Define the measurement

Agree the operating decision, required units, useful response time and acceptance criteria.

2. Plan the installation

Review the sensor, wetted materials, fitting, access and control-system connections.

3. Validate and hand over

Use representative, time-matched reference samples and record the configuration, output scaling and maintenance plan.

Over 50 years of process measurement experience

PMA has supported process measurement and analysis since 1971. We bring the instrument, the installation and the measurement objective together.

Share your process conditions with our team. We can help with product selection, application review, commissioning and ongoing support.

Brochures, guides and field evidence

SDM ECO brochure

Explore acoustic-impedance slurry density measurement and the available installation arrangements.

View SDM ECO brochure

Chemical concentration brochure

Compare the 8500 and 9500 measurement roles and the wider chemical concentration family.

View CCM brochure

Grupo México case study

Read the manufacturer’s account of SDM ECO density monitoring on a tailings thickener. Results describe that installation.

Read the case study

Frequently asked questions

Which Rhosonics analyser should I choose?

Choose SDM ECO for a defined slurry density duty, 8500 for one chemical concentration, 9500 for two chemical concentrations and 9100 for wort extract. Review the 9600 family for suitable hybrid slurry-analysis duties. PMA can confirm the configuration for your process.

Does ultrasonic measurement use a radioactive source?

These ultrasonic measurement principles do not require a radioactive source. The sensor, fitting and operating conditions still need an appropriate engineering review.

Can one instrument measure every type of liquid or slurry?

No. Suitability depends on the composition, measurement range, temperature, entrained air and installation. Calibration and reference evidence must represent the actual process.

Can the measurement connect to our control system?

Output and communications options differ by product and configuration. Tell PMA your required analogue signals, digital protocol and control-system arrangement so the integration can be specified.

Let’s talk about your application.

Speak to the PMA team about your instruments, reagents or service requirements. Tell us what you need, and we’ll help you find the right next step.

  • Advice for your application. Find the right instruments, sensors and chemical reagents for your process.
  • Practical service support. Discuss commissioning, calibration, maintenance or an instrument issue with our team.
  • Clear next steps. Ask a technical question or request a callback, with your site and measurements in mind.
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Call 01484 843 708

You can also email [email protected].

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